The Fabrication of an Implant-Retained Mandibular Overdenture By Mian Bëhm In partial fulfilment of BTech: Dental Technology

Contents Condition and Background Information Condition and Background Information Possible Clinical Treatment Options Possible Clinical Treatment Options Possible Technical Treatment Options Possible Technical Treatment Options Most Suitable Treatment Option Most Suitable Treatment Option Treatment of Choice Treatment of Choice Laboratory Procedures Laboratory Procedures References References Acknowledgements Acknowledgements

Condition and Background Information Motor vehicle accident Motor vehicle accident Severe back and neck injuries Severe back and neck injuries Class 1 Compound fracture of mandible 1 Class 1 Compound fracture of mandible 1

Condition and Background Information Continue Functional problems in left condyle Functional problems in left condyle No lip seal No lip seal Impaired speech Impaired speech Loss of aesthetics Loss of aesthetics

Possible Clinical Treatment Options 1 st Treatment Removal of mandible Removal of mandible Osteotomy 3 Osteotomy 3 2 nd Treatment Creating a new sulcus Placing multiple implants

Possible Technical Treatment Options Conventional partial denture Conventional partial denture Implant-supported overdenture Implant-supported overdenture Implant-supported ceramic restoration Implant-supported ceramic restoration Partial denture ± R Excl. Surgery Special trays Record blocksOverdenture ± R Excl. Surgery Implants Implants Special trays Special trays Record blocks Record blocks Ceramic restoration ± R Excl. Surgery Implants Implants Special trays Special trays Record blocks Record blocks

Most Suitable Treatment Option Implant-supported ceramic restoration Advantages Life-like aesthetics DurableDisadvantagesExpensive Technically challenging Little supporting structure

Treatment of Choice Advantages Advantages Less expensive Good aesthetics Restore facial profile Removable Disadvantage Tissue wear Implant-supported overdenture

Laboratory Procedures 1. Impression and model 2. Set-up, wax-up and duplicate

Laboratory Procedures 3. Surgical stent 4. Implants

Laboratory Procedures 5. 2 nd Impression and model with analogs 2 6. Wax-up with guide pins

Laboratory Procedures 7. Wax is precision milled 8. Retentive balls are placed

Laboratory Procedures 9. Framework is cast and polished 10. Overdenture placed

References 1. Harold, W. Overdentures Made Easy, 3rd ed. London: Quintessence Publishing Co Ltd. 1996: 105 – Southern Implants, Laboratory Procedures Manual, January Whaley, K. Muir’s Textbook of Pathology, 15th ed : Whaley, K. Muir’s Textbook of Pathology, 15th ed : 680.

Acknowledgements Prof. Morkel Prof. Morkel Mr Mazema Mr Mazema Ms Nortjé Ms Nortjé Mrs Wright Mrs Wright